i have a utility room in my basement and i'd like to add a bath also. the existing fixtures that are in this room are washer/dryer, breaker box, hot water heater. i have a 2" drain pipe with check valve for my washer, and would like to join into this. what are my choices for a toilet and lav etc.and how far can these be from exisiting plumbing(the room is aprox.12*12)? it would be no problem to join into drain pipe on the out put side of my existing check valve if that will make it less complicated. thank you and i hope you have good news!